You have a great selection of oscillator modules in Mod3 already but also search for some of the high quality free modules posted on here..
Hifiboom supersaw oscillator and low pass filter (the red one) are a must have.
I also really like Shroomz megamulti osc and tube filter.
There are whole packages of extra modules such as Adern Flexor and the excellent free CWModular but for now i'd recommend learning mostly the basics.
This tutorial should get you started for a simple mono bass patch
http://www.cwmodular.org/html/tut01basicmono.html
Then you can start to add extra oscillators, change filters or add modulators/extra filters etc