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Courses and skills: useful articles

Plain-language explanations based on official sources. The sources used are listed at the end of every article.

Topics:#language levels#CEFR#CEFR levels A1 to C2#English language levels#what is B2 level#TORFL#TORFL levels#Russian as a foreign language#Excel#Excel functions#XLOOKUP#how XLOOKUP works#VLOOKUP#SUMIF#PivotTable#Flash Fill#accounting basics#what are assets and liabilities#assets liabilities and equity#income and expenses#IFRS#IFRS Conceptual Framework#financial statements#1C
Language levels A1 to C2: what do they mean? (English and Russian)

Language levels A1 to C2: what do they mean? (English and Russian)

What do A1, B2 and C1 mean? CEFR language levels and how the Russian TORFL (TRKI) levels correspond to them, for learners of English and Russian.

22 October 2026 · 👁 1
6 Excel tools everyone should know

6 Excel tools everyone should know

How does XLOOKUP work, and what is the key rule of VLOOKUP? SUMIF, IF, PivotTable and Flash Fill: 6 Excel tools that make everyday work easier.

22 October 2026 · 👁 0
Accounting basics: assets, liabilities, equity, income and expenses

Accounting basics: assets, liabilities, equity, income and expenses

What are assets, liabilities, equity, income and expenses? Simple definitions based on the IFRS Conceptual Framework, examples and a short note on 1C.

22 October 2026 · 👁 0