Introduction to Guitar

If you just got your guitar,  you might find this course presented by the Berklee College of Music a good starting point. It's a structured free class that is very well done -

https://www.coursera.org/learn/guitar/

Syllabus

Week 1

Welcome to Introduction to Guitar

Preview

1. Welcome to Introduction to Guitar
2. Choosing Your Guitar
3. Essential Accessories

Week 2

Acoustic / Electric Guitar and the Basics

1. Welcome to Lesson 2
2. Parts of the Guitar
3. Chord Block Diagrams and Fretboard Maps
4. Lesson Assignment and Peer Review

1. Assignment: Lesson 1 Peer Review

Week 3

Getting Started: Fundamental Guitar Skills

1. Welcome to Lesson 3
2. String Names and Numbers
3. Tuning Your Guitar
4. Picking
5. Strumming
6. Lesson Assignment and Peer Review

1. Assignment: Lesson 2 Peer Review

Week 4

The Twelve Half Steps and Basic Notation

1. Welcome to Lesson 4
2. Twelve Frets and Twelve Half Steps
3. Notes on the Fretboard
4. Rhythm Basics
5. Music Notation and Tablature
6. Lesson Assignment and Peer Review

1. Assignment: Lesson 3 Peer Review

Week 5

Scales: Construction and Fingerings

1. Welcome to Lesson 5
2. Position Playing
3. The Chromatic Scale
4. Major Scales
5. Lesson 5 Assignment and Peer Review

1. Assignment: Lesson 4 Peer Review

Week 6

Chords: Building Easy Triads and Power Cords

1. Welcome to Lesson 6
2. Triad Chords
3. Power Chords
4. Lesson 5 Assignment and Peer Review

1. Assignment: Lesson 5 Peer Review

Week 7

Putting it All Together: The Pentatonic Scale and Songs

1. Welcome to Lesson 7
2. Pentatonic Scale
3. Essential Electric Guitar Effects
4. Songs
5. Summary
6. Lesson 6 Assignment and Peer Review
7. Introduction to Guitar Course Evaluation

1. Assignment: Lesson 6 Peer Review