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Goldman Sachs | Guide to European Indicies 
Hopefully, this is a useful resource for folks new to financial markets, and old hands might even pick up something new.
DAX:
It is a blue-chip index consisting of the 30 major companies trading on the Frankfurt Stock Exchange. The weight of each constituent cannot exceed 10% The DAX index has low exposure to Germany (20%) When China sneezes, the DAX catches cold.
MDAX: MDAX offers access to the German midcap segment Index has a revenue exposure of 51% to Europe, 19% to North America, 17% to Asia-Pacific and 13% to other Emerging Markets Argue that it provides a poor reflection of domestic German growth, rates or policies.
CAC 40: CAC 40 is a benchmark French stock market index Has low exposure to France (17%) French market is characterised by its luxury exposure, being home to LVMH, Kering, Hermes
FTSE MIB: MIB is a benchmark Italian stock market index The Italian index is more exposed to its domestic market (44%) than its European peers MIB trades at a discount to the European market (P/E basis)
IBEX: IBEX is a benchmark Spanish stock market index IBEX is concentrated in just a few companies: five stocks make up over 50% of its market cap (Iberdrola, Santander, Inditex, BBVA and Amadeus IT) A fifth of Spain’s sales exposure is to Latin America
FTSE 350: FTSE 350 is a benchmark UK stock market index Combination of the FTSE 100 and the FTSE 250. Has revenue exposure of 26% to the UK, 16% to the rest of Europe, 26% to North America, 21% to Asia-Pacific and 11% to other Emerging Markets
FTSE 100: The FTSE 100 derives more than 75% of its revenues from outside the UK Sterling, a cushion for the FTSE 100
FTSE 250: FTSE 250 is a hybrid index with roughly 50/50 domestic and international sales exposure The correlation with sterling is more positive; a lower GBP is a drag on the index to the extent it is a signal of economic weakness or political risks
SMI: Swiss Market Index (SMI) is Switzerland's blue-chip stock market index The Swiss index has limited exposure to Switzerland (7%) and is the most international index in Europe Europe's safe haven.
MSCI Nordic Countries: MSCI Nordic Countries Index captures large and mid cap companies across Denmark, Finland, Norway and Sweden Nordic index has limited exposure to the region (27%) Nordic countries relatively stable
