It will take quite a while - the MPC system is very powerful but complex and fractured compared to the Elektron user interface. You will come across a few bugs, although ime Akai is pretty responsive about fixing things, and most bugs are of the ‘____ doesn’t work’ variety rather than lockups or data loss. It’s also quite menu-divey once you get into modulation and more advanced sorts of sound design. Some parts of the user interface are super-optimized and Just Work, eg the mixer section and the sample editing tools. Other parts are clunky - dialog boxes that are too big for the screen so you have to scroll them, endless menus in modulation setups etc.
As a practical matter, get used to using the scroll wheel in the lower right corner from the outset. You don’t need it because you can do many things with the touch screen, but a lot of the user interface is optimized for the scroll wheel and developing the habit of using with the screen controls will save you a lot of frustration. For example editing notes on the grid with the touchscreen alone is annoying and makes many users wish for a mouse. But selecting notes and then shuffling or transposing them with the wheel is fast and smooth.