1. when new player start the game new player have free 330 gacha skill and 220 free gacha avatar o nly do this gacha and keep gems until good banner appear
2. New player will get 250 gem gacha and guarentee 1 4* skill just do this banner
3. Don't use gem for Beginner gacha, it's not good in my opinion since player will get random skill and cost to much gems or just do step 1
4. For gear, new player didn't need to craft manually, just buy it from merchant until you can't processed your main quest, at least buy gear from floor 61 merchant because it stater gear for beginner (my experienced i can finish main quest until chapter II only with 60k total power)
5. Focus on 1 weapon skill gacha/event gacha like birhtday gacha or specific weapon gacha (at least have 1 set for 1 weapon, 4* skill in 1 set weapon)
6. Ability skill/armor skill is important too but better to get weapon skill first
7. Don't waste gems on avatar gacha, avatar gacha didn't give any stat
8. doing daily and weekly will give you 450 gems/week so don't forget to do daily
9. Get your boss weapon series by killing boss from Floor 13 and up (if gonna do solo doing entry level is good because you still get rare item) and choose boss base your main weapon like boss weak to slash/thrust/blunt

thats all points i can share for beginner and all points above is only my opinion some player have their own opinion it will help if can share each other