Top 10 Tech Skills in demand in 2019:

1. Machine Learning
2. Mobile Development
3. SEO/SEM Marketing
4. Data Visualization
5. Data Engineeringj
6. UI/UX Design
7. Cyber-security
8. Cloud Computing/AWS
9. Blockchain
10. IOT

Top 10 Sites to learn Excel for free:

Search for these on Google:

1. Microsoft Excel Help Center
2. Excel Exposure
3. Chandoo
4. Excel Central
5. Contextures
6. Excel Hero
7. Mr. Excel
8. Improve Your Excel
9. Excel Easy
10. Excel Jet

*Top 10 Sites for Free Online Education:

1. Coursera
2. edX
3. Khan Academy
4. Udemy
5. iTunesU Free Courses
6. MIT OpenCourseWare
7. Stanford Online
8. Codecademy
9. Open Culture Online Courses

Top 10 Sites to review your resume for free:

1. Zety Resume Builder
2. Resumonk
3. Resume[com]
4. VisualCV
5. Cvmaker
6. ResumUP
7. Resume Genius
8. Resumebuilder
9. Resume Baking
10. Enhancv

Top 10 Sites for Interview Preparation:

1. Ambitionbox
2. AceTheInterview
3. Geeksforgeeks
4. Leetcode
5. Gainlo
6. Careercup
7. Codercareer
8. InterviewUp
9. InterviewBest
10. Indiabix