Got ya. So research until I can build training implements, then wait until I decide to build a base sometime down the line for things like smithing.
I had one person (Izumi) researching as much as possible, while my squad of adventurers continued as normal other than leaving rare items (ancient science books, engineering reseach, AI cores) at the research bench. That way, when I finally decided to build my own base, I was able to take advantage of advanced technologies such as automated mining and hydroponics. Of course, this is probably a less 'authentic' Kenshi base-building experience than starting a base with primitive technology and then researching technological advances as your base gradually expands.
And does someone sell backpacks?
Aside from the travel stores already mentioned, the Shinobi Thieves sell Thieves Backpacks with 60% encumbrance reduction and almost no penalties. It's best to have one equipped on every party-member so that you can easily haul large quantities of loot.