For Left Block, you should definitely check out some Roux First Block tutorials, for example
Kian Mansour's or
teoidus' videos.
For EOStripe, there's an
alg sheet of EO cases. It's usually best to influence the edges while solving EO, similar to EOLine. A trick to do EOStripe more efficiently is also to make sure that the D center is on top after EO so that you only have to place DF and DB at UB and UF, respectively, and finish with an r2. (This should be more efficient than having the center solved and inserting the edges separately.)
Right Block can be done CFOP-like by inserting the cross edge and then solving the two pairs <RU>-gen.
If you want to get more efficient at building the Right Block (this is most advantageous for one-handed solving and to a lesser degree also for two-handed solving), you can learn how ZZ users do it (see
Conrad Rider's text based tutorial and
Phil Yu's video tutorial). Here it is important to remember that you can also use cross-corner pairs for blockbuilding.
Generally, watching example solves (
Roux for Left Block and
ZZ for Right Block and Last Layer or just the ones in the
LEOR Example Solve Game) should also help you.