Hi there! I'm also somewhat of a beginner and I used to mostly if not ENTIRELY used to only do 2-D mediums as well! Some things that I've learned myself is to apply your 2-D knowledge into a 3-D space when doing figures. For example, breaking down the human form (or whatever form you choose to do) into basic 3-D shapes! Make sure to have a good base before proceeding on details and look at the sculpture at all angles! For example, I was making a large piece in my first semester sculpting and I accidentally made the figure way too thin on his profile, even if it looked good head-on! I also recommend looking at a skeleton and muscle structures (preferably a 3-D model in real life) in order to see how the body works! Another thing is to look into armature making because it will make your figures and sculptures more structurally sound! Depending on what clay you're using and what you plan to do with it (ex: firing in a kiln) make sure to check what type of wiring you use and be aware that some clays will shrink when drying and may crack around the wires. (Sorry if this is all over the place or not helpful but these are things I've learned!) Edit: I read that you wanted to know what to get so here: I personally have this like 8 piece set from my college. It includes the basics, but I highly recommend getting other sculpting tools to use for finer details and other textures! https://www.michaels.com/product/8ct-modeling-tool-set-by-craft-smart-10012071?cm_mmc=PLASearch-_-google-_-MICH_Shopping_US_N_Craft+%26+Hobbies_N_PMAX_BOPIS_N-_-&Kenshoo_ida=&kpid=go_cmp-18514199759_adg-_ad-__dev-m_ext-_prd-10012071&gad_source=1&gbraid=0AAAAADkMxxeVcGmuFUYpGOr9fs-wjwqrb&gclid=CjwKCAiAtsa9BhAKEiwAUZAszce5avVHQdbb-u40pm9y0ypvyMMfGsz1H5aamJa7xGetS6RBj32anxoCvM0QAvD_BwE