Starting with the school stuff could be a good idea Atqui. When we started learning Portuguese, I found the French word would pop into my mind instead, sometimes even the German one and I only did a year of that!
Like Deedaa, DH and I started learning Portuguese in our fifties because we spent holidays there. As a less popular language it was very hard to find any at that time and our teacher, though a very pleasant person, was not a good teacher. Probably because she was a Portuguese accountant trying to supplement her income.
We have had lots of lessons with lots of teachers over the years. Ironically, comparatively recently, when we only went along to make up numbers we found the best one of all. She managed to make a group of mature expats of varying abilities, gel together, gain confidence and above all enjoy learning. Unfortunately she emigrated last year and with the teacher we found this year, (because we all enjoyed the lessons so much and wanted to continue together) two of our best beginners have already dropped out.