Complex sentence: He used that money to also buy a computer, monitors, desk, keyboard and all the things he needed to build a studio which would end up being the first version of The Jokerr's Lair which is the name of his recording studio.
Split into simpler sentences: He used that money to buy a computer, monitors, desk, keyboard and additional equipment he needed to build a studio. This would end up being the first version of The Jokerr's Lair, which is the name of his recording studio.