I'd propose Gnembon's youtube channel, he does some very good starter pleasant films and it has a great deal of material about xp farming. His gold farm is customized to xp farming such as. As there would be water across the gap which is able to make the mobs drop https://elliotbnyfp.blazingblog.com/18276073/about-how-do-you-make-an-enderman-xp-farm-easier