diff --git a/biketour/tour.pas b/biketour/tour.pas
new file mode 100644
index 0000000..9af11b0
--- /dev/null
+++ b/biketour/tour.pas
@@ -0,0 +1,149 @@
+program login;
+
+uses
+  md5, crt;
+
+type
+  CONNECTION = record
+    hotel : string;
+    distance : integer;
+  end;
+
+  HOTEL = record
+    name : string;
+    conn : CONNECTION;
+  end;
+
+  USER = record
+    un: string;
+    pw: string;
+    l: boolean;
+  end;
+
+const
+users: array [0..4] of USER = (
+  (un: 'user1'; pw: '16d7a4fca7442dda3ad93c9a726597e4'; l: false),
+  (un: 'user2'; pw: 'ccd2fc33d2d423d7209035dbfff82b29'; l: false),
+  (un: 'user3'; pw: '57c2877c1d84c4b49f3289657deca65c'; l: false),
+  (un: 'user4'; pw: '4101bef8794fed986e95dfb54850c68b'; l: false),
+  (un: 'root';  pw: '63a9f0ea7bb98050796b649e85481845'; l: false)
+  );
+hotels: array [0..4] of HOTEL = (
+  (name: 'Hotel 1'; conn: (hotel: 'Hotel 2'; distance: 11)),
+  (name: 'Hotel 2'; conn: (hotel: 'Hotel 3'; distance: 5)),
+  (name: 'Hotel 3'; conn: (hotel: 'Hotel 4'; distance: 11)),
+  (name: 'Hotel 4'; conn: (hotel: 'Hotel 5'; distance: 5)),
+  (name: 'Hotel 5'; conn: (hotel: ''; distance: 0))
+);
+
+var
+  readinput: string;
+  i, j, distance_total, hnum1, hnum2: integer;
+  correct, exit: boolean;
+  usersuccess: boolean = false;
+  velocity, time: real;
+
+{ Calculates the total distance between hotels based on the hotel number input.
+  (Only numbers accepted!). After printing the total distance a velocity can be
+  input to calculate the estimated time. }
+procedure hotelmain;
+var
+  i : integer;
+begin
+  while exit = false do
+  begin
+    distance_total := 0;
+    for i := 0 to 4 do
+    begin
+      distance_total += hotels[i].conn.distance
+    end;
+    Writeln('Total tour length: ', distance_total, ' km');
+    Write('First Hotel Number: ');
+    ReadLn(hnum1);
+    Writeln;
+    Write('Second Hotel Number: ');
+    ReadLn(hnum2);
+
+    If ((hnum1 <= 5) and (hnum2 <= 5)) then
+    begin
+      distance_total := 0;
+      if (hnum1 > hnum2) then
+        for i := (hnum1-2) downto (hnum2-1) do
+          distance_total := distance_total + hotels[i].conn.distance
+      else
+        for i := (hnum1-1) to (hnum2-2) do
+          distance_total := distance_total + hotels[i].conn.distance;
+      Writeln('Distance between hotels is ', distance_total);
+      Write('Velocity (km/h): ');
+      ReadLn(velocity);
+      time := (distance_total / velocity);
+      WriteLn('Estimated Time: ', time: 10: 2, ' hours');
+    end;
+    Write('Exit? (y/n)');
+    ReadLn(readinput);
+
+    if readinput = 'y' then
+      exit := true
+    else
+      exit := false;
+  end;
+end;
+
+begin
+  TextColor(8);
+  Writeln('Tourplanner');
+  Writeln('Written by J.Riegel.');
+  TextColor(White);
+
+  { endless loop/main loop of the program. Exit with CTRL-C }
+  while true do
+  begin
+    Write('User: ');
+    ReadLn(readinput);
+    usersuccess := false;
+
+    { Iterate over all 5 user entries to find the one
+      that fits the input. set usersuccess to true if found
+      else it remains false and an user not found error
+      is printed to the console. }
+
+    for i := 0 to 4 do
+      if readinput = users[i].un then
+      begin
+        usersuccess := true;
+        if (users[i].l) then
+        begin
+          TextColor(Red);
+          Writeln('This user is locked.');
+          TextColor(White);
+          Break;
+        end;
+
+        { 3 tries for password input. Return to the username
+          input after failure. correct is set to true if
+          the loggin was a success. }
+
+        for j := 0 to 2 do
+        begin
+          WriteLn('Password: ');
+          ReadLn(readinput);
+
+          if MD5Print(MD5String(readinput)) = users[i].pw then
+          begin
+            WriteLn('Login Successful!');
+            correct := true;
+            Break;
+          end
+          else
+            WriteLn('Wrong password! ', 2 - j, ' trys left.');
+        end;
+        { @section userfunctions }
+        if correct = true then
+          hotelmain()
+        else
+          users[i].l := true;
+      end;
+    if usersuccess = false then
+      WriteLn('User not found');
+  end;
+end.
diff --git a/test/arithmetictest.pas b/test/arithmetictest.pas
new file mode 100644
index 0000000..1146966
--- /dev/null
+++ b/test/arithmetictest.pas
@@ -0,0 +1,23 @@
+program arithmetictest;
+const
+  val1 = 3;
+  val2 = 1.0;
+var  res1 : EXTENDED;
+  res2 : EXTENDED;
+begin
+  res1 := sqrt(3)*sqrt(3);
+  WriteLn(val1, ' ', res1);
+  if val1 = res1
+  then
+    WriteLn('val1 and res1 are the same')
+  else
+    WriteLn('val 1 and res1 are not the same');
+  res2 := (1.0/49)*49;
+  WriteLn(val2, ' ', res2);
+  if val2 = res2
+  then
+    WriteLn('val2 and res2 are the same')
+  else
+    WriteLn('val2 and res2 are not the same');
+  WriteLn(10e4933);
+end.
diff --git a/test/casetest.pas b/test/casetest.pas
new file mode 100644
index 0000000..1566e78
--- /dev/null
+++ b/test/casetest.pas
@@ -0,0 +1,17 @@
+program casetest;
+
+var
+  input: integer;
+
+begin
+ReadLn(input);
+case (input) of
+  0..49 : WriteLn('kleiner 49');
+  50..52 : WriteLn('50 - 52');
+  else
+    if (input < 0) then
+      Writeln('kleiner 49')
+    else 
+      WriteLn('groesser 52');
+end;
+end.
\ No newline at end of file
diff --git a/test/helloworld.pas b/test/helloworld.pas
new file mode 100644
index 0000000..1b81340
--- /dev/null
+++ b/test/helloworld.pas
@@ -0,0 +1,8 @@
+program helloworld;
+
+const msg = 'Hello World!';
+
+begin
+  WriteLn(msg);
+  ReadLn;
+end.
diff --git a/test/numbers.pas b/test/numbers.pas
new file mode 100644
index 0000000..8dca4b8
--- /dev/null
+++ b/test/numbers.pas
@@ -0,0 +1,9 @@
+program numbers;
+var
+  i: integer;
+begin
+  for i := 1 to 10 do
+  begin
+    WriteLn(i, ' ', i*i);
+  end;
+end.
diff --git a/test/pinumber.pas b/test/pinumber.pas
new file mode 100644
index 0000000..5acf37c
--- /dev/null
+++ b/test/pinumber.pas
@@ -0,0 +1,10 @@
+program pinumber;
+const
+  pi = 3.14159;{definiert als EXTENDED}
+var
+  piSecond : extended;
+begin
+  WriteLn('Pi ist definiert als ', pi);
+  piSecond := pi;
+  WriteLn(piSecond);
+end.
diff --git a/test/producttable.pas b/test/producttable.pas
new file mode 100644
index 0000000..f1c8397
--- /dev/null
+++ b/test/producttable.pas
@@ -0,0 +1,17 @@
+program producttable;
+
+var
+  table: array [0..20, 0..20] of integer;
+  i, j: integer;
+
+begin
+  for i := 0 to 20 do
+    begin
+      for j := 0 to 20 do 
+      begin
+        table[i, j] := i*j;
+        Write(table[i, j] : 3, ' ');
+      end;
+    Writeln;
+    end;
+end.
\ No newline at end of file
diff --git a/test/squares.pas b/test/squares.pas
new file mode 100644
index 0000000..c29c38f
--- /dev/null
+++ b/test/squares.pas
@@ -0,0 +1,26 @@
+program squares;
+
+var
+  i : integer;
+
+begin;
+  for i := 0 to 20 do
+    Write(i*i, ' ');
+  Writeln;
+
+  i := 0;
+  while i <= 20 do
+  begin
+    Write(i*i, ' ');
+    i := i+1;
+  end;
+  Writeln;
+
+  i := 0;
+  repeat
+  begin
+    Write(i*i, ' ');
+    i := i+1;
+  end;
+  until i > 20;
+end.
\ No newline at end of file