As a beginner, what type of indexing is the easiest to begin with?
Unfortunately there are not many Beginner level of difficulty projects at the present time. And the easy ones get completed rather quickly.
Some of the Intermediate level project are not that much more difficult than Beginner level projects, for the easier ones the only reason that they are categorized Intermediate is because there are more than just a few records in the images. None of the projects that I can recall working on have more than 10 images, most have 5 or fewer, per batch.
You should be sure to view the training videos that can be found in the Group Resources area of the Indexing Chat group. Drag gray the slider bar to the right to find the training videos list.
One project that I would consider on the lower end of the Intermediate level is: United States—Enlisted and Officer Muster Rolls and Rosters, 1916–1939 [Part H]. These are all typed records, with a single image in each batch, some of the images have just a few records while others have over 50. I reviewed a batch containing 95 today, but most are in the 40 to 60 range. There are only 7 fields per record to fill and two of them will generally be filled with the blank indicator (Ctrl-B).
If something looks like it will be too much you can always return the batch (click Batch on the menu and select Return Batch).
Be sure to read all three sections of the Project Instructions and all of the Field Help before you start indexing.