Hit a rough patch, Creator? That's quite alright. Here I have gathered some useful links to help you accomplish the objectives. Hopefully they can answer some of your questions. Best of luck, and as always, if a link isn't working or if there are still questions to be answered, please contact me.
Flowlab Resources Page:
Admittedly, that page is on Flowlab's website. You can find it if you click on the HELP tab on the upper left side of the screen. Here you can find lots of useful tutorial videos.
These are a few different photoshop tutorials that I found while searching the web. They use different tools, some of the tutorials are videos and some of them are articles with pictures, choose what works best for you. If you find one on your own that you think is awesome, please share it with me so I can post it here!
This is another one that can be found on the program-in-question's website. You can find this page by clicking on the LEARN tab located in the menu at the top of the page. These tutorials take a learn by doing approach where they give you instructions in a sidebar off to the left and you have to complete the instructions.
This is a link to the official Apple Garageband tutorials. There you can find tutorials on all the different parts of Garageband.