In the beginning, you will want to follow the advice of the previous posts and educate yourself on the personal lines coverage forms. Those will allow you to learn when, where and how to look for certain exclusions and limitations that may come into play on your claims.
As a beginner, don't let yourself get caught up with commercial coverages. Most likely, as a beginner, you won't be given any commercial losses anyway. If so, you will be in the sink or swim mode.
I was staff trained by a carrier as a multi-line adjuster, and worked for them 8 years handling HO, Commercial Prop, Commercial Auto, Commercial General Liability, Workers Comp, you name it. Went to another carrier with similar duties for a few years, then to an Indep as a local branch multi-line IA, and finally off on my own as an inside IA CAT consultant/file reviewer. I've been working for this same carrier (and only this carrier) since 2005 on a steady basis and constant standby when their volume doesn't require me. Presently I am back at the same carrier, handling only commercial losses....but this year have been given a plethora of losses on commercial coverage forms I had never seen before. At first I felt like a rookie again, but went back to RTPYF (Read The Policy, You Fool)!
The foundation you lay for yourself in learning the easier forms (HO's), and knowing what to look for or who to ask for help...the easier it will make to transition over to commercial losses one day down the road. It's been said many a time here on CADO, if coverage knowledge is to be learned and learned correctly.....one should go the staff route first. You get paid to learn how to do it before actually doing it.