Strength training: How-to video collection

I received an Osteoporosis Insight 2019 Newsletter email this morning with this weeks top story -- Strength training: How-to video collection
To help make your muscles stronger and maintain bone density, you may want to try strength training — as long as your doctor gives you the go-ahead first. For those of us that need a little more direction on the how to do specific exercises to help get us in better condition this is a gold mine of videos.

Here is the link: https://www.mayoclinic.org/healthy-lifestyle/fitness/in-depth/strength-training/art-20046031/

Here is a list of the available how to videos:

Body-weight exercises: You can do body-weight exercises with little or no equipment. Watch these strength training videos to see how they're done.
-- Abdominal crunch
-- Lunge exercise
-- Modified pushup
-- Squat exercise
-- Step-up exercise

Resistance-tubing exercises: You can do resistance-tubing exercises at home or on the go. These strength training videos will get you started.
-- Bent-over row with resistance tubing
-- Biceps curl with resistance tubing
-- Hamstring curl with resistance tubing
-- Hip abduction walk with resistance tubing
-- How to choose resistance tubing
-- Squat with resistance tubing
-- Standing hip abduction with resistance tubing
-- Triceps kickback with resistance tubing

Free-weight exercises: Wonder how to get the best results from free weights? These strength training videos will show you how.
-- Bent-over row with dumbbell
-- Biceps curl with barbell
-- Biceps curl with dumbbell
-- Calf raise with dumbbell
-- Chest press with dumbbell
-- Reverse fly with dumbbell
-- Squat with dumbbell
-- Triceps extension with dumbbell

Weight-machine exercises: Whether you use weight machines at home or at the gym, proper technique is essential. Brush up on the basics with these strength training videos.
-- Biceps curl with weight machine
-- Chest press with weight machine
-- Knee extension with weight machine
-- Lat pull-down with weight machine
-- Lying hamstring curl with weight machine
-- Seated hamstring curl with weight machine
-- Seated leg press with weight machine
-- Seated row with weight machine
-- Triceps extension with weight machine

I plan to check out the resistance tubing and free weight videos. Which ones do you think can help you?