Don't forget to claim the names that you get during Phantasy Star Online 2 Meseta, with the NPC Lachesis. She is in the Title Counter, on the side of the Gate to the campship. A window will open that displays earned, upon talking with her. Then, a more complete list of those Titles that have been obtained is revealed, and those you have not already claimed rewards for are listed in crimson text. Click one, and you'll get the rewards and also the capacity to choose that Title to proudly display above your operative's name. (from the PSO2 page)

From level 20 to level 40: now you can enter the maps' Hard difficulty. If you haven't completed your class teacher's missions yet, now is a fantastic time to do them. It's possible to utilize Kressida's missions as a way to visit the different areas of every planet, and in case you haven't completed Afin's missions yet, you can certainly do them together with Kressida's assignments. You can perform missions from Amelin, Io and Franca later. Remember to keep doing Cofy's missions. Also, there is a pursuit from your course instructor (at level 30) which will provide you 5 Skill Points to invest in your skilltree. Remember to do these assignments for your subclass along with your main class.

At this time, your firearms and units start to gain importance. I recommend that you have weapons of your course at 4* - 6* of rarity at +10 minimal, and components of 4* - 6* of rarity at +5 minimal. In case you have better weapons and units, that is great. And in case you haven't made rings for your character yet, this is a good time to get it done. It is a good idea to begin after the story of Phantasy Star Online 2. Bear in mind you could follow the story in 2 modes: an easy mode that does not request too much, and a difficult manner that can test your character's abilities. If you stick to can you buy meseta on pso2 the story in easy mode, you can replicate it in difficult mode when you have more better and level weapons and components. Also at this point it is a good idea to begin entering Urgent Quests, which means it is possible to get better things and exp to your own character. Don't forget to keep claiming your names.