It would be very difficult for me to recommend a course or product for you to use as this is something you really must decide for yourself based on your research and of course your interpretation of the recommendations and experiences of other geeks on the site.
As you have already done an IBD gel course, do you want to continue with gel, do you like the product, maybe find out what other education they provide. Do you want to try a different product or system?
The way I got into the industry was by way of a VTCT course in Advanced Nail Techniques at my local college and then went on to do additional training with EZ Flow.
This is only one example of the avenues into nails...there are many many more.
Do the search, have a read and see what you think then.
Sorry if this comes across a bit woolley but I could say go with XYZ and what they offer could be totally inappropriate for your own personal circumstances.
HTH