Ah, the entry/exit learning phase... Yes, I remember it well, as does my left leg.
If you're a porky six feet two, rather like my alter ego Eric, ahem, then the adopted method is to poke left leg in and under steering wheel with foot turned out Chaplin style, and poke it in to pedals.
Lean over, sit as best one can, and lean toward the passenger door to get enough room to double up the other walking thing and try to miss the paint/leather/sill.
Legs down, belt up and away.
Getting out is a similar pantomime, but getting out with the roof up is best done in private. Seriously..!! These cars ain't big.