I suggest you make some mule characters so that you can transfer the gear that you want to keep.
At the start, TierIII items are the best, as long as they have the required mods for you, then you get
to level 5 character, you can start wearing TierIV items, and if you find some, you can transfer your
TierIII items using the Marketplace [Transfer Tab] and select character to send them to... this helps
you keep your items, as you increase in levels and find higher tier items, you can rinse and repeat this.
You start with 8 Inventory on your character, when you complete a catacomb, you have done the Maze
objective which bestows either 1 or 2 extra inventory slots. You can do this with mules once you have
starting gear to make it faster for you.
Try for 75 Vitality at the start, then go for 75 strength, then alternate 5 stats points to each until you
reach 100 vitality then rest in Strength... you must use Strength ratio weapons (Swords / Clubs / Axes)
you may find better ee items, but different type at same tier level that you can use, so switch to the
better weapon... but as stated before... swords are a good starting point, if you come across axes... try
to keep those also as well as daggers for later on.
Hope this helps with your startup.