Thanks for the recommendation, Bitflipper. I think the trickiest part to "get" in the sample library is the priorities in the mapping section. In other words, if you play a note that qualifies for more than one articulation (for example, if they're mapped on overlapping ranges), it won't play both articulations simultaneously, but prioritize one over the other to play. Hopefully the video tutorial I made on that concept will help, though.
Here's a video tutorial on the memory options in Evolution Electric Bass Rick. These memory options will load and unload samples as needed, giving you flexibility with how much RAM the patch uses.
Video Tutorial: "Evolution Electric Bass Rick - Memory Options"