'Tis the season...
Key tips: 1. Making a good early impression within your banking group is key (better staffings, recommendations to firms, & help with headhunters) 2. Talk to older analysts who have been through the process 3. Ask for old modeling templates and tests (PE firms recycle modeling tests) 4. Practice modeling before your interviews -- tough to catch up at the end 5. Prepare for the soft questions (tell me about yourself, etc.). 6. If you have multiple options, pay attention to the firm culture signals.
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What else you got? Know there are a lot of recruiting threads on here, but monkeys, add your tips below.
The most underrated thing by far is doing well in your current job from my experience while also not sacrificing prep time. The analysts in my group who are going to megafunds were doing PE prep and busting their asses to get the best staffings / best recs simultaneously. They did well in interviews, but what was more important was that everyone else in the group was on board with them recruiting out.