T shirt making equipment (Harrow)

Just got my own studio flat after being homeless for 2 and a half years, want to desperately get off benefits and better my self, I saved up and bought a heat press with my benefit money, pat on the back for me, but I'm stuck regarding the printer that can deal with t shirt ink and also a laptop or powerful enough phone to make the designs etc, can anybody help me regarding these items, I thank you so much for even reading my dilemma, yours sincerely Cyrus