I enjoyed this. I didn't have any problems following the plot (despite what I've seen in other reviews) and thought it was a reasonably well done origin story. Sure, it's not as good as Black Panther, but not many comic book adaptations are.
I thought the Stan Lee version of the Marvel logo was a nice touch, and I loved his cameo with the Mallrats script!
There's two post credit scenes, one near the start which ties into Endgame, and one right at the end which is a bit more lighthearted.