don't believe you will find a section that will give specific instructions on specific software. If you are doing inkjet transfers, you only need the Corel X3 software you have. true it is an older version, but still is what most of us have used in the past. If you don't have the original disks, training videos etc, your best bet is look for tutorials on youtube.
You mentioned 'inkspace'...I am not familiar with that program. Do you mean 'inkscape'? if so...inkscape is a free vector based drawing program, very much like Corel but without a large support group or tutorial base since it is an open source program
I know there are couple of Corel experts that are on the forum and I think a couple have fee based training program...maybe one will contact you.
Another thought..if you buy a current Corel program it will come with some pretty good tutorials. Oh...and if you live near a large town, try going to a large bookstore like Barnes and Noble. They might have some books to help