This is obvious, but every level past level 50 also grants Skill Points Lost Ark Gold, a total of 6 per level. This means that just from playing the game and casually leveling to 60 over a long amount of time, players will get an additional 60 Skill Points. Additionally, Skills can even be raised to 11 at level 55 and 12 at level 60, which is all the more reason players should make it a priority to start collecting Skill Point Potions as soon as possible.

Adventure Tome Completion
First up are the Skill Point Potions gained from Completion Percentages for the Adventure Tome. For the most part, getting to 50 percent or higher on any of the 13 continents in Lost Ark is pretty easy just by farming Unique Monsters, clearing both Dungeon Difficulties, buying or farming all the Collectibles, and cooking most of the regions food.

For reference, while Punika's story isn't all that long compared to some of the other regions, it takes quite a bit of work to get it to 80 percent, so keep in mind that this likely isn't something players can do in a single day or even in a few days. In any case, here are the Adventure Tome completion amounts that reward Skill Point Potions in specific regions:

East Luterra 70% North Vern 60% Shushire 50% Rohendel 70% Punika 80% (This one gives a Greater Skill Point Potion)
And for those who are struggling a bit with their Adventure Tome, here's a recommended order from easiest to most tedious for what tasks they should try and complete first:

Main Quest Vistas Dungeons (Normal and Hard) Unique Monsters Field Boss Hidden Stories Another Story Collectibles Food Rapport Climbing the Tower(s)
Next up are the Skill Point Potions gained from both of the Towers found near the buy Gold Lost Ark Dimensional Cube and Boss Rush statues in any major city. Before going any further with this advice however, it needs to be said that players are highly recommended to do both Towers for the first time on an Alt, as the rewards for both are primarily Roster share-able.