I started Taylor on baby food at about 4-5 months. Of course some came out her nose and while it grossed other people out it never bothered me or Taylor. I just wiped it off and kept on feeding her.
She was on Stage 1 baby food for about a month then I figured out that the thicker baby food worked better so I switched her to Stage 2. She quickly outgrew that & wanted Stage 3 or the Toddler food. She simply could handle the "chunkiness" of that food better.
She's been on table food now for about 2-3 months now and she's 11 months old with 4 teeth.
The thing to do is to start out slowly, offer her foods at her rate (taking in account for watching her for allergies with each new food) and to let her tell you what & when she is ready.
Yes, the food will come out her nose but Taylor has just had her hard palate repair at 10 months and food still comes out her nose. You learn quickly to wipe their nose as frequently as their mouths!
Good luck with this new step!