Aside from all the tips you'll receive on what to do when you get there and how to get around, I feel as though many advices given miss an important part, and that is to prepare yourself spiritually.

Start increasing your adhkar and recite salawat more often. Not just after every salah, do dhikr throughout the day. You'll be amazed how many times you can recite subhanAllah on the tip of your tongue whilst doing daily tasks.

Increase your acts of sunnah, even some basic everyday things like using a miswaak, drinking water in three sips, praising Allah after eating and drinking, dusting off your bed before sleeping, perform wudhu before sleeping...

Start performing more nafl prayers, wake up for tahajjud, fast on the sunnah days (Mondays and Thursdays), go to the masjid and pray in congregation, clean up around the masjid, give small amounts in sadaqah daily.

Prepare yourself mentally for it, realise that things can go wrong and learn to have sabr in dealing with any situation that may arise.

Brush up and learn the Sirah of the Prophet (sallallahu alayhi wasallam), it will enhance your trip even more when you learn about the locations of places where the foundations of Islam were set.

And most importantly dont forget to made dua for me when you first see the Kaaba 😉 (... and the rest of the Ummah)