If you don't already have one, you can probably find an owner's manual if you look near the bottom of the forum homepage under the red banner that says "Library", and under that in the sub-forums, there's a button for "Hi Lo Owner's Manuals".
There is also a collection of videos that are very informative, around 30 individual videos in total. They can be found here:
Sounds like you've got the priorities right......lube (pack bearings and lube lift mechanism & cables), check for any leaks & new tires. Have brakes checked/adjusted. Many are installing LED bulbs (available on Amazon & other sites for relatively inexpensive).
Post any specific questions, this is a friendly group and we don't kid anyone too hard!