Hi frabriciovivas,
Thanks for the kind comments, remember you can always leave thank you messages for Lisa and Anders on their forum pages.
If you're having trouble moving fast between strings, it sounds like you might want to work on your spider leg exercises to go up and down the fretboard smoothly. You always want to learn as slow as possible when you're learning something new.
Here's a good little exercise from Anders in Rock Level 2: https://www.guitartricks.com/lesson.php?input=21448&s_id=1720
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