This isn't really that bad if you know 4LLL. Really it's only 2LLL because you can't ever switch corners or flip edges.
First step would be to learn how to orient the corners using just Sune and Anti-Sune. This isn't to bad. Lars Petrus's site
has a lot of good options to learn.
I like to do a 3-edge cycle with 2 Anti-Sunes. First one starts on L' and the second one starts with F.