Disclaimer- Warning: before any physical exercise you should check with a health professional. Get your Physical, EKG, Blood Work, Cholesterol, Chest x-ray, and go over family history.  I am not a health professional, nor fitness expert, just an average joe. 

I have used each page I list and I do have a wonderful PCP and Ph.D. PT Doctor who makes sure I know what I am doing.

What can you do? LABS

Before 30 get baselines.
Talk to relatives and get a good genetics history of issues.
Know your Total Cholesterol, HDL, LDL
      Blood Pressure
      Height, Weight, Waist measurement
      Fasting  Sugar, A1C      Vitamin D  all part of metabolic testing.

Check your nutrition this site is great. http://nutritiondata.self.com

Yoga Basics  It is great to learn balance, stretch your body, and create energy

stretching.name (skiing)

stretching.name (snowboard)

Weight Lifting

Weight Training, Exercise Instruction & Kinesiology

StrongLifts 5×5 – for beginners who have never lifted weights, or Squat less <140kg/300lb.

Madcow 5×5 – for intermediate lifters who can Squat at least 140kg/300lb right now

Read more https://stronglifts.com/training/