No need to travel, no need to pay fees, just a stable internet connection and computer users can effectively self-study English online or assess their English proficiency through the following methods:
Effortless English method

Effortless English is a English learning method highly regarded, trusted, and applied by millions of people worldwide. Each video has Vietnamese subtitles to help you study more effectively.
Paltalk

Paltalk is a useful tool for improving learners' listening and speaking skills in communicative English. It is also the largest voice chat community today with over 4 million members, thousands of chat rooms on various topics. There are special chat rooms for TOEFL preparation (established by international or Vietnamese study groups) or pronunciation practice (moderated by native speakers), pure English listening and speaking, playing games, and English word puzzles.
Online Slang Dictionary

If you truly want to understand the essence of the English language, then you shouldn't overlook this website. Whether in the office or on an Internet forum, you'll encounter many expressions, idioms, and slang that might confuse you. The website is regularly updated, so you'll never fall behind in developing your language skills. This website is particularly useful for those learning English as a second language or for those in need.
HowJSay
Moving on to pronunciation, you can use HowJSay, which can be more than just a pronunciation dictionary. With over 160,000 entries, you're more likely to find the words you need. The standout feature of HowJSay is that it has app versions for both iPhone and Android. If learning pronunciation on the go is what you're looking for, this is likely to be helpful.According to VnMedia
