the session view is where IT ALL HAPPENS!!!
this is where you can play your clips "live" as an instrument so to speak.
if you hit "apple-k" see everything turn yellow? now click on anything that is highlighted - a clip, a fader, an fx parameter -whatever. now hit a key on your qwerty keyboard. that assigns that clip or function to that key. or hit "apple-m" (screen goes blue) and assign anything to MIDI control.
BTW hit apple-m or apple-k again to leave assignment mode.
if you hit Live's record button and then jam around on the keyboard (qwerty or MIDI) Live records EVERYTHING you do onto the arrange page, where you can edit it after the fact with great precision.
you can assign different quantise values to different clips in the lower left corner of the clip view page (double click on any clip loaded into the session view page to bring this up)
Handy Hint: on either of Live's pages, click the triange in the extreme bottom left of your screen - this brings up Info View which explains the function of whatever parameter your cursor key is sitting over.
Live is live!
Life is good!
Amen and Hallelujah!!!
hope this helps