Advantages:

1. Flexible time: Online learning can be conducted according to your own schedule, regardless of place and time.

2. Rich resources: There are a lot of Russian learning resources online, including video tutorials, audio tutorials, online courses, etc.

3. Strong interactivity: Many online courses have interactive links, which can get teachers' feedback and guidance in time.

4. Lower cost: Compared with offline training courses, online learning costs are usually lower.

Disadvantages:

1. Lack of face-to-face communication: Online learning can't communicate directly with teachers like offline learning, which may affect the depth and effect of learning.

2. High self-discipline: Online learning needs strong self-discipline, because without the daily supervision of teachers, it is easy to be distracted or lazy.

3. Network problems: If the network is unstable, it may affect the learning effect.

How to learn:

1. Choose a suitable online learning platform: You can choose some well-known online education platforms, such as Coursera, Udemy, RosettaStone, etc.

2. Make a study plan: Make a reasonable study plan according to your own time and study progress.

3. Insist on studying every day: Set aside some time to study Russian every day, so as to keep the continuity of learning.

4. Do more exercises: consolidate what you have learned and improve your language ability by doing exercises.

5. Use network resources: In addition to the resources provided by the online learning platform, you can also find more learning materials and communication platforms through the network.