Hello and welcome to the forum.
There are many different products in the TS3.5MAX bundle. And it must be daunting for a new-comer. But,do not worry - it just takes a bit of time. It would be best to learn about the products one at a time. A User Manual is installed when you install each software product. Groove3 has several videos on IK Multimedia products and you can get a 30-day access pass:
https://www.groove3.com/browse/by-category/manufacturer/ik-multimediaWe would need more info about your circumstances before we can offer constructive help. For starters::
-- what have you done so far?
-- how have you used AmpliTube?
-- what do you want to do first?
-- do you have a DAW (Digital Audio Workstation)?
-- do you have a MIDI keyboard?
For each of the products there are some users here who will be able to give you useful info. It is best to ask specific questions, otherwise the replies can ramble on and could take you down an irrelevant path.