Assets of a module with the module.

I bought LMoP and learned I don't get the assets with the module (maps token images and such) I bought if I don't start on that module.  Are other modules like that? LMoP didn't list what it came with other then a module so I can only look at myself but, for example the new Tyranny of dragons double includes in it's features  " Statted Tokens featuring original artwork from Dungeons & Dragons. Tokens are linked to Character entries in the Journal, with Roll20 5th Edition OGL character sheets and clickable actions. &  10 Original Battle Encounter Maps, exclusive to the Roll20 module (split up between the two modules): Camp, Swamp, Daytime Road, Nighttime Road, Ice Floe, Town, Forest, Tavern, Volcano Cave, and Evil Temple." It's in it's features, so I'd assume you can pull those into other modules? Also, if I had the monster manual it would have to be usable in modules, because it doesn't have a module. Is there an easy what to tell what comes with what or is it just about reading the features like I'm a responsible adult?

If you have a Pro subscription, you can use the Transmogrifier tool to copy pages, tokens, characters, etc. from one game to another.

The monster manual items show up in the compendium. Modules work like LMoP and require the transmogrifier to move assets to another campaign.

I planned on getting pro later anyway so I'm happy to hear this. 

i can confirm that the intent is to use the pro feature to copy items out of modules into existing games. Game add ons are another beast entirely using volos guide to monsters as an example. this comes with a game addon that adds maps and tokens to an existing game but it also unlocks the use of Volo's monsters in the compendium you also have the option of copying out content like a module if you wish.