Making use of second (ext3) hard drive

I have two hard drives. Both are FireCudas, "half ssd, half hdd". One has 1TB of space and the other, with my Manjaro on it, has 480GB. Up until now (for 2 years) i have not used the second drive, however since my install is *pretty* fresh, i thought i'd get around to it. Currently the 1TB only has a lost+found dir and is otherwise empty. I want to somehow have my /home folder (I assume that's where all personal junk is) on the second drive along with documents, games on steam, pictures and all the junk. Is that even possible? Is reinstalling every program necessary? How would i go about this, i assume a lot of programs just use /home/me so all would have to change to /db/home/me (/db is where my 1TB is mounted)