Step 1: Your Background
To change your stage (background), select your stage (third column) and in the second column, go to the second tab (labeled Backgrounds). I did import and selected from the scratch library.
Step 2: Text on the Screen
In the first column at the top, select 'Control'. You'll see a lot of 'when-', 'if-' and 'if- else'. Select the 'when [flag] clicked' and or 'when [space] key pressed'. (You'll have to drag them over to column two, one at a time).
If you'd like, you can go to the 'Motion' (top of first column) or 'Looks' (right below 'Motion') and have the character ask/say things. (You can go to 'Sensing' to add 'ask [What's your name?] and wait' if you want input from the user).
If you get your second command close enough to the first, it should snap automagically to the first.
Step 3: Points
Step 4: If [this] Happens, Do [that]
In the 'Operators' (right above 'Variables') tab you can add a "-- = --" and put what ever number you'd like in the second blank. In the first blank put 'points' (your variable located in the 'Variables' tab). While in the 'Variables' tab, you can add 'change [points] by ' in between the 'if-' and the 'repeat until -' (or add another 'if-' command where the 'repeat until -' is).
Under the 'Sensing' tab (underneath 'Control') you can add 'touching color ?' to the 'if-' command (right beside the word 'if'). (You'll get points every time you touch your chosen color)
Step 5: Make It Move and You've Won
To finish it off, you can go to the 'Looks' tab (under the 'Motion' tab) and select the 'say [Hello!]'. You can change the hello to what ever you would like and add it to the 'repeat until - '/the second 'if-'.
(Optional: in the 'Variables' tab, there's a 'set [points] to . You can add this to right underneath the 'when [flag] clicked').
Tada! Now you have a game you can edit however you want. Have fun!