I'm new to this type of gaming, and while I'm getting the hang of it gradually, there's some things I've yet to figure out.
First and foremost, how do I use all of the extra add-ons the game keeps giving me such as the XP Bonuses and various potions?
I've read through the Help files and such, but still haven't figured it out.

I'm sure there'll be other things I can't figure out as I progress, but this would be really helpful to know.
Thanks.

For the XP Boosts, open your Inventory (Press Esc, click the "My Character" menu button, and then click "Inventory" under that) and simply double-click on the XP Boost.
For the potions, and I'm assuming you're referring to the Nigiris and the bottled fruits/flowers like the Sakura, Plum, and Dandelion that restore SP and the Hi-Potions the game gives you at the start, you also just double-click them in the Inventory.
For easier use, assign a shortcut (F1-F2-F3-F4-F5) for the consumable you want. To assign a shortcut, drag and drop the item onto the shortcut of your choice.

Yukihana wrote:For the XP Boosts, open your Inventory (Press Esc, click the "My Character" menu button, and then click "Inventory" under that) and simply double-click on the XP Boost.
For the potions, and I'm assuming you're referring to the Nigiris and the bottled fruits/flowers like the Sakura, Plum, and Dandelion that restore SP and the Hi-Potions the game gives you at the start, you also just double-click them in the Inventory.
For easier use, assign a shortcut (F1-F2-F3-F4-F5) for the consumable you want. To assign a shortcut, drag and drop the item onto the shortcut of your choice.

Thank you very much!
That's exactly what I was looking for.