If I could give every new (or old) rider just one tip - it would be to get a set of custom earplugs.
Once you've tried these you'll wonder how you ever managed without them. I've found that you can ride for far longer, with far less fatigue, than you would have thought - it really does make a huge difference.
And you can still hear sat-nav instuctions or music from helmet speakers.

If you have the opportunity to attend bike-safe courses with your local police force, do it, taught me loads.                                                                                                                                                                             

If you are at the point of learning get an instructor who teaches you to ride not just to pass your test.

                                                                                                                                                                             

Here is a very useful article about riding in the rain

https://www.bennetts.co.uk/bikesocial/news-and-views/advice/biking-tips/how_to_ride_in_the_rain?cid=sm_000004

I'm not a big fan of hi viz kit - especially lime. Other drivers are immune and blind to it, these days.

If you prefer to wear it - or have to due to EU trips...mix lime with another colour, like orange. The contrast helps in all weathers and catches the attention of other road users more quickly.
Hi viz doesn't make much of a difference head on - but from the back and sideways on, multi colours helps in heaps.

I have toured a lot. Usually alone..l love it, best kit; A sports bag secured with bungies along the axis of the pillion seat, this can house all my camping gear. Then a magnetic tank bag with clothes & toiletries, the latter is excellent for hotel stops (usually every third or fourth night) soft throw over panniers are a good addition if you need more capacity. There is no need to spend a lot on specialist gear, most of which is over designed, the tankbag outer pocket is the place for a torch (easy access in the dark ! ) Check out my profile pi tures as l will be posting pictures of my touring luggage set up..hope this helps..☺

Check out my tips in the forum..☺