Here are some quick examples of Rider activities. There are many more, so use the drop down menu to view them all!

Build a Den
Without a doubt, this is the first thing you want to do! By founding a Den, you can keep pets called Familiars and add Furniture. Both of these give special bonuses to your dragons and unlock unique activities! In example, you can throw a big party in your Den and the dragons inside will gain +10 EXP! You can also install a Dream Catcher and get bonus EXP when you draw your dragon inside a dream. More information here.
Get a Job
An unemployed Rider is just unused potential! You can have up to three jobs, although only two max can be leveled up to the highest tier. At level one, you only have access to one job, and you can promote it. I highly recommend unlocking Rancher as your first job (as long as it matches your character). Ranchers have an increased shot at finding Familiars in activities. Familiars have a huge array of buffs and are highly valuable to a majority of players. Even if you don’t want one, someone else is sure to! They also sell for a high amount of Silvence, if you choose to go that route. For advanced and/or confident players, you can pursue a crafting job instead! More information here.
Training
To raise your Rider’s prestige, you’ll want to do some training. Training is only available to dragons with Riders. It gives your dragons stat points that help in activities and PvP. Do at least three training images. More information here.
Raise Your Rider’s Prestige
Once you have all that done, everything in the game is unlocked for you! You can focus on battling, choose to do Den prompts where your dragon hangs out in the garden all day, or anything in between! If you have questions or suggestions, comment on this page or the corresponding deviantART journal.
Advanced Riders gain access to more jobs and promotions. They also give their dragon an increased success rate during activities. The advancement quest is a story about the Rider’s bond with their dragon(s). More information can be found on the Rider Prestige page.